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Spun Off From: JAG
We first meet Leroy Jethro Gibbs, Anthony DiNozzo and the NCIS team as they investigate JAG's Harm (David James Elliott), who is suspected in the murder of a lieutenant. The rest, as they say, is history. Still setting ratings records in its eighth season, NCIS is the No. 1 show in America and has spawned its own spin-off, NCIS: Los Angeles.